<template>
  <div class="app-container">

    <!-- 顶部 Header 区域 -->
 <mt-header fixed title="黄楠 vue项目">
	<span slot="left" @click="goBack" v-show="flag">
     <mt-button icon="back">返回</mt-button>
  </span>
 </mt-header>


    <!-- 中间的 路由 router-view 区域 -->

		<transition>
				<router-view></router-view>
		</transition>
		


    <!-- 底部 Tabbar 区域 -->

			<nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-lib" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-lib" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-lib" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
				<span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span>
				</span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-lib" to="search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>

  </div>
</template>

<script>
export default{
	data(){
	return{
		flag:false,
	}
	},
	created() {
		this.flag=this.$route.path==='/home'?false:true;
	},
	methods:{
		goBack(){
			// 点击后退
			this.$router.go(-1);
		}
	},
	 watch: {
    "$route.path": function(newVal) {
      if (newVal === "/home") {
        this.flag = false;
      } else {
        this.flag = true;
      }
    }
  }
	
};
</script>


<style lang="scss" scoped>
		.mint-header{
			z-index:99;
		}
		.app-container{
			 padding-top:40px;
			//  水平滚动条超出范围后就隐藏，不能写y的，y要竖直滑动.注释
			 overflow-x:hidden;
			 padding-bottom:50px;
		}
		.v-enter{
			opacity:0;
			transform:translateX(100%);
		}
		// 注释，解决向右消失和从下往上的问题
		.v-leave-to{
			opacity:0;
			transform:translateX(-100%);
			position:absolute;
		}

		.v-enter-active,
		.v-leave-active{
			transition:all 0.5s ease;
		}
		nav{
			z-index:999;
		}
		.mui-bar-tab .mui-tab-item-lib.mui-active {
    		color: #007aff;
		}
		.mui-bar-tab .mui-tab-item-lib {
		display: table-cell;
		overflow: hidden;
		width: 1%;
		height: 50px;
		text-align: center;
		vertical-align: middle;
		white-space: nowrap;
		text-overflow: ellipsis;
		color: #929292;
	   }
	   .mui-bar-tab .mui-tab-item-lib .mui-icon {
		top: 3px;
		width: 24px;
		height: 24px;
		padding-top: 0;
		padding-bottom: 0;
       }
	   .mui-bar-tab .mui-tab-item-lib .mui-icon~.mui-tab-label {
		font-size: 11px;
		display: block;
		overflow: hidden;
		text-overflow: ellipsis;
}
</style>
